24.32% is the change from 518 to 644
Calculation steps:
[( 644 - 518 ) ÷ 518] x 100 = 24.32%
Formula
Percentage change = [(644 - 518) / 518] x 100
Subtract the new number by the original number
644 - 518 = 126
126 ÷ 518 = 0.24324324324324326
0.24324324324324326 x 100 = 24.32%